Dell EMC PowerVault MD 34XX/38XX Series Storage Arrays Administrator's Guide

Starting and stopping background performance monitor

1. In the Array Management Window (AMW), click the Performance tab.
2. Click the Launch background performance monitor link.
   The View Current Background Performance Monitor dialog is displayed.
3. Click the Start link.
   A warning is displayed stating that performance data is available for a maximum period of seven days and older data is deleted.
4. To confirm, click OK.
   To indicate that background performance monitoring is in progress, the Start link changes to Stop, and the system shows an In Progress icon next to the Stop link.   

   NOTE: For accurate data, do not change the system date or time while using background performance monitor. If you must change the system date, stop and restart the background performance monitor.
5. To manually stop background performance monitoring, click the Stop link.
   Background performance monitoring automatically stops when you close the Enterprise Management Window (EMW). Background performance monitoring also might stop when you start a firmware download. You are prompted to save the background performance monitoring data when this happens.  

   NOTE: When you close the EMW, you might be monitoring more than one storage array. Performance data is not saved for any storage array that is in the Unresponsive state.

   A dialog is displayed asking you whether you want to save the performance data.
6. Do you want to save the current Performance Monitor data?
   • Yes – Click Yes, select a directory, enter a filename, and then click Save.
   • No – Click No.
7. To close the View Current Background Performance Monitor dialog, click Close.